Ground: Ground is an important element of the design.

首层：首层是设计的重要元素。

youdao

Controllers on the ground joked that the flight had gone so well they did not have enough to do.

VOA: special.2009.07.22

But it is interesting. Let's just, for an order of magnitude say what happens for ground state electron in atomic hydrogen?

但行星模型其实挺有趣的，按照重要的先后顺序，我们来猜想一下,氢原子中的基态电子会发生些什么？

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so I don't know, I think it's just really cool to be able to work something from the ground up.

所以，我不知道，我就是觉得能从头开始做一件事很酷。

什么是认知科学？ - SpeakingMax英语口语达人

The ground has to be tilled, the seeds sown, fertilizer spread, the ground watered.

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Where is the neutral ground where agreement is reached when the ground itself is moving?

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We always say they should hit the ground running, they always hit the ground stumbling.

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